557 Standard sizes

2 in. x 60 yds.

557/ 260

24

Single Roll (1-23 Rolls)

1 - 4 Cases (24-119 Rolls)

5 - 9 Cases (120-239 Rolls)

10+ Cases (>= 240 Rolls)

$21.81

$18.93

$18.31

$17.84

N/A

$454.32

$439.44

$428.16

Nominal Tape Widths vs Actual Widths

Tape rolls are cut to standard tape industry metric widths of approx. 24mm per 1-inch of nominal width ordered. As a result ACTUAL tape widths are normally 5% narrower than the NOMINAL width shown in inches. Examples:

1" Nominal width = 15/16" (24mm) Actual width

2" Nominal width = 1-7/8" (48mm) Actual width

3" Nominal width = 2-13/16" (72mm) Actual width

Note that tape rolls are NOT guaranteed to be splice-free.

Product Description

Nashua 557 Premium Grade Flex Duct Tape is high performance printed duct tape specially engineered for flex duct systems. The tape acts as a superior closure system for use with flexible air ducts and air connectors. Recommended for use on UL list flexible air ducts in accordance with manufacturers' installation instructions. For use in heating, air conditioning, ventilating and refrigeration applications. Suitable for bonding, protecting, holding, repairing, and patching. Nashua 557 is a UL 181B-FX listed product. It possesses excellent shear properties and superior quality, performance, and tensile strength. Shows excellent resistance to mold growth, humidity, flame spread, smoke generation, and the effects of high temperatures. Low VOC content and can contribute toward requirements for EA Credit 1 (Optimize Energy Performance) and toward satisfying EQ Credit 4.1 (Low Emitting Materials) under LEED®.

Offers the widest range of application flexibility available. Exhibits excellent processing performance whether manually or automatically applied. Has superior tensile strength, adhesion properties and holding force which ensures consistent, reliable seals. Hot melt adhesive will bond faster to a surface which is referred to as quick-grab or quick-stick. It typically has higher tack (will feel stickier to the touch), but is also softer. It has lower heat resistance, shear resistance, and sometimes UV resistance than an acrylic adhesive. NOTE: it is called hot melt because the adhesive is applied hot by the manufacturer and then hardens as it cools (you do not need to apply heat to the tape yourself).

natural rubber

Properties are similar to that of hot melt rubber, but natural rubber often holds where other adhesives won't (recycled fibers, dust, cold, heat and heavy loads). It provides good overall adhesion and moisture resistance.

acrylic

Offer excellent performance, especially for applications in temperatures less than 40°F and greater then 120°F. It provides excellent clarity, has high shear strength, is usually more permanent/durable even when exposed to moisture, and it ages well over extended periods in fluorescent and sunlight. Since it remains clear for the life of the application and does not yellow over time it is ideal for applications such as sealing white cartons. While it has good initial adhesion it does take 24-48 hours to cure and to achieve its maximum bond strength (has gradual adhesion buildup). Another difference between hot melt rubber and acrylic adhesive is if you fold tape over making the two adhesive sides touch the acrylic adhesive will remain attached to the carrier (e.g. paper, film) while a hot melt adhesive will stick to itself and pull off of the carrier. It is the best choice for clarity, UV resistance and aging characteristics.

silicone

Is great for extreme temperature applications since silicone adhesive can work in continuous operating temperatures from -100°F to 500°F. They also exhibit good chemical resistance, retain electrical properties, and remove cleanly with little or no residue.

zinc oxide

Zinc oxide based adhesive formula is a skin-friendly adhesive which is commonly used on sports medicine tapes.

Thickness, AKA caliper or gauge, refers to the distance from one surface of a tape backing, or adhesive, to the other.